Improvement in looms



11 Sheets-Sheet 1. E. B. BIGELOW.

' LOOM. No. 172,296. Pa

N. PETERS, FHOTO-LITHOGRAFHER, WASHlNGTDN. D 0.

11 Sheets-Sheet 2. E. B. BIGELOW.

LOOM. No.17Z,Z96, Patented Jan.18, 1876.

N.PTERS, PHOTO-LITHOGRAPHER. WASHINGTON, D, C.

11 Sheets-Sheet 3. E. B. BIGELOW.

MPEYERS, PHOIO-LITHOGRAPNEH. WASHINGTON n C.

11 Sheets-Sheet 5. E. B; BIGELOW LOOM. I

No.17Z,Z96. P tented Jan.18, 1876.

NFETERS. PNOTO-LITHOGRAFNER. WASHINGTON D C 11 Sheets-Sheet8. E. B.BIGELOW.

LOOM. N o.17Z,296.' Patented Jan.18,1876..

//v vs/v TOR;

NJETERS- FHOYD-IJTHOGRAPHER, WKSRINGTON, D O.

I V 11 Sheets-Sheec10. EHB. BIGELOW.

LOOM. No.172,296. Patented Jan.1 8,'1876.

MPETERS. FHOTD-LITHOGRAFHER, WASHINGTON. Uv C i UNITED STATES ERASTUSBRIGHAM BIGELOW,

PATENT OFFICE.

OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN LOOMS.

Specification forming part of Letters Patent No. 172,296, dated January18, 1876; application filed August 16, 1875.

To all whom it may concern:

Be it known that I, ERASTUS BRIGHAM Bre- ELOW, of Boston, in the countyof Sufi'olk and State of Massachusetts, have invented Improvements inLooms for Weaving Brussels Carpets and other fabrics, of which thefollowing is a specification:

My invention is composed of several parts, which are related to thevarious operations of the loom, respectively, as follows, viz: to themode of driving, reversing, and stopping the loom; the mode of operatingthe lay; the mode of constructing and of operating the shuttlebinder;the mode of operating the jacquardmachine, and of adjusting itselevation relative to the loom;the mode of operating the comber-board;the mode of operating the beddle-frames; and also to the mode ofconstructing and of operating the brake which holds the tension-barrigid at the time the laybeats up the weft.

The accompanying drawings, which form a part of the specification,represent my improvements, and such other parts of the loom as arenecessary to illustrate their construction and operation.

Figure 1 is a front elevation; Fig. 2, a righthand end elevation; Fig.3, a left-hand end elevation and Fig. 4, a plan, each view occupying twosheets. The other figures are detached views of certain'parts of themechanism.

The variousparts of the loomframe are marked a, and the frame of thejacquard-machine b. The driving-shaft is marked 0, the lay-shaft d, thecam-shaft e, the heddle-shaft f, and the shaft which actuates thejacquard machine and the pile-wire mechanism g. A gear, h, engages agear, 4;, and turns the shaft A gear, j, engages a gear, k, and turnsthe shaft (2. A gear, 1, engages a gear, m, and

. turns the shaft f, and a miter-gear, it, engages a similar gear andturns the' shaft g, the shafts e and 9 having one revolution to two ofthe shaft (1, and the shaft f one revolution to two of the shaft e. i

The mode of driving, reversing, and stopping the loom will now bedescribed. The

driving-pulley 0 is engaged and disengaged with the driving-shaft tomove and to stop the loom by means similar to those described in mypatent for improvements in power-looms, dated February 9, 1869, andnumbered 86,805. The reversing mechanism herein to be dean elevation ofthe side nearest the loom in Fig. 6. The axis q revolves in a pipe-box,10,

formed on the lever-arm u, and carries the roller 19 and gear r, whilethe gear 8 is supported by the stud t,- the object of the last-mentionedgear being to change the direction of motion. The reversing mechanism isso located with respect to the driving-shaft that when it is raised to acertain point the gear 8 engages a gear, as, affixed to thedriving-shaft, and the roller 1) presses against aroller, y, affixed tothe driving-pulley, and so long as the two rollers are held in firmcontact a reverse movement will be imparted to the loom, and when theyare separated that movement ceases, and the reversing mechanism becomesstationary until it is again brought into action. The pipe box to,before mentioned, rests in a fork formed on the upper end of a verticalbar, 2, which, at its lower end, is jointed to the horizontal arm of anelbow-lever, a

which oscillates'on a fixed stud, b and has its depending arm connectedwith the upright arm of a treadle -lever, 0 by a rod, d treadle-lever coscillates on a stud, c and is widened out at its forward end to receivethe foot of. the weaver.

When the weaver wishes to give a reverse movement to the loom she, with.her foot,

presses down the forward end of the treadlelever, which, through theconnections just 111- dicated, raises the reversing mechanism. and

puts it in action; then, when she wishes the reverse movement to cease,she removes her foot from the treadle-lever, and the reversing mechanismfalls out of action by its own weight.

The a The loom-shipper is marked f and is capable of oscillating on theouter end of a shaft, 9 as on a fixed stud. Though moving toward andfrom the lay of the loom, its upper end plays in a slot, W, as is usual,and is forced forward to stop the loom by a spring, 5 The means by whichit engages and disengages the driving-pulley with the driving-shaft maybe the same as that described for that purpose in the patent abovereferred to.

The mode of applying the brake for arrest ing the movement of the loomis as follows: The brake, which is marked j oscillates on a fixed stud,70 and acts on a brake-wheel, P, on the driving-shaft, as is usual. Itis brought into action and released by a togglejoint arrangement,consisting of an elbow-lever, m which oscillates on a fixed stud, a anda link, 0 which is jointed at its forward end to the brake, and at itsrear end to the horizontal arm of the elbow-lever. The de pending arm ofthe elbow-lever is connected by a rod, 19 with an upright lever'arm, gaffixed to the shaft 9 so that when the shaft g is turned toward thefront of the loom, it presses the brake against the brake-wheel, andwhen it is turned in the opposite-direction, it withdraws the brake fromthe brakewheel. The shaft is turned to bring the brake into action bythe shipper, and in order that the brake may be released while theshipper is at rest, as is required to be done when the reversingmechanism is brought into-action, or when the loom is turned by hand,the shipper is engaged and disengaged with the shaft, as fol-- lows,viz.: The shipper has an arm, 1' depending obliquely from it, to which alock-lever, s is jointed, as represented in Figs. 7 and 8. A spur, tprojects from the inner side of said lock-lever, which, by the pressureof a spring,

1?, looks into a notch, 11 in an arm, 10 affixed to the shaft g The arm20 and a releasing-lever, :0 now to be described, are shown in Fig. 9,with the shipper removed. The releasing-lever oscillates on a fixedstud, y, and has a slot, z formed in its lower end, as represented inthe figure just mentioned. A roller carried by a stud, a affixed to thetreadle-lever 0 plays in said slot, and oscillates the releasing-leverwhen the treadle-lever is oscillated.

When the upper arm of the releasing-lever is moved forward, acam-surface, b acts on the lower end of the lock-lever s and withdrawsthe spur if from the notch t and thus disconnects the shipper from theshaft, while the upper end of the releasing-lever strikes a projection,0 on the arm w", and turns the shaft a sufficient distance to withdrawthe brake from the brake-wheel. Now, suppose the loom to be thrown outof gear, and the weaver desires to release the brake from thebrake-wheel and set the loom free, she presses the treadle-lever down acertain distance, and thereby disconnects the shipper and releases thebrake, as just explained; and if she also wishes to reverse the movementof the loom, she presses the treadle-lever down still farther, and thusbrings the reversing mechanism into action.

When the loom is suddenly stopped, the recoil of the mechanism farthestfrom the driving shaft is such as to sometimes displace some of itsparts, especially to disengage a pile wire from the withdrawing hook. Toprevent this effect I apply a brake to the shaft which actuates thewire-operating mechanism, which acts simultaneously with the brakeapplied to the drivingshaft just described.

In my application for a patent for improvements in looms for weavingpiled fabrics, filed July 14, 1875, the specification describes awire-operatin g mechanism actuated by a shaft similar to the shaft g,before designated. To this shaft a wheel, 01 is affixed, which serves asa brake-wheel, and carries the'crank-stud for operating thewithdrawing-hook. On a fixed stud, e, a brake, f oscillates, which actson the wheel 01 and is jointed at its inner end to a link, 9 which isjointed at its up per end to a crank-arm, 7L3, affixed to the shaft 9When the shaft is turned to apply the brake to the drivingshaft, it atthe same time brings the brakef into action, and when it is turned inthe opposite direction, it releases both of the brakes simultaneously.

The mode of operating the lay of the loom, which has What is technicallycalled a doublebeat movement may be understood as follows The swords iof the lay, which carry the racebeam oscillate on studs 70 as is usual.On the rear sides of the swords lugs l are formed, to which the forwardends of connecting-bars m are, respectively, jointed, while the rearends of said connecting-bars are jointed to the ends of the lever-armsn, which are affixed to a shaft, 0 which oscillates in fixed bearings-pFrom this description it will be seen that an oscillating movement ofthe shaft will impart a vibratory movement to the lay, and that when thelever-arms are depressed, as represented in the drawings, they will putthe lay in its backward position, and that when they are elevated so asto bring the axes of the several parts in a line, they will put it inits forward position, and thus give the first beat; then when thelever-arms are elevated still further to a position indicated by dottedlines in Fig. 10, they will draw the lay back a correspondingly shortdistance, and by their return movement giv'e it the second beat, thusgiving to the lay two beats at each oscillation of the shaft.

Heretofore the required oscillating movement has been given to the shaftby two cranks formed on a crank-shaft located below the lever-arms, and,respectively, connected therewith by suitable connecting-bars.

In my improved mode of operating the lay only one crank is required,which, being located outside of the loom-frame,is more accessible, aswell as more simple in its 0011- struction, than the double crank-shaftlocated inside the loom-frame. It may be described as follows, viz: acrank-wrist, g is carried by the gear t','bet'ore designated, andisconnected by a bar, W, to a depending arm, s ,-which is affixed to theshaft 0 a It will be readily seen that by these means the crank-wristwill impart one oscillation to the shaft 0 at each of its revolutions.

The mode of constructing and operating the shuttle binder will now bedescribed. This part of my invention has for its object to arrest theshuttle at the termination of its movement without a shock, and torelieve it from the bite of the binder before it is thrown. The means ofaccomplishing this object consist, in part, in giving to theshuttle-binder somewhat the quality of a spring, and holding itsswinging end rigidly when the shuttle is completing its movement intothe shuttlebox, and liberating it before the shuttle is thrown.

Fig. 11 is a plan, and Fig. 12 a rear view, of the right-handshuttle-box; and Fig. 13 is an end view of the same on an enlargedscale.

The shuttlerace and the front part of the shuttle-box are constructed asusual. The

shuttle-binder is marked t and has one end of it pivoted at u to therear side of the shut-- another arm, 2, projecting from the rear side ofthe shuttle-binder when the shuttle enters the shuttle-box. From therear side of the axis a lever-arm, aflextend's with its end bent towardthe loom to bring it over a stationary cam-surface, b, (see Figs. 3 and11,) which acts upon it. To stop the loom when a shuttle fails to entertheshuttle-box the shuttle-binder acts on a lever-arm, c affixed to theprotecting-rod d as is usual. When a shuttle enters the shuttle-box itstrikes the swelled part of the Shuttlebinder, and when it has pushed itback a sufficient distance to operate the protectingrod the arm 2strikes against the arm y and rigidly holds the swinging end of thebinder, while the spring-action of the binder gradually arrests theshuttle; then as the lay moves forward to beat upthe cloth thecam-surface b elevates the arm a, withdrawsthe arm 3 from the arm a andthus liberates the binder and sets the shuttle free preparatory to itsbeing thrown. To enable the weaver to release the shuttlebinder when theloom is at rest a handle, 0 is affixed to the axis 50 by which she mayreadily turn the axis.

The picking mechanism may be described as follows: A front view of it asapplied to the left-hand end of the loom is given in Fig. 14,

and a plan thereof in Fig. 15. with a section 4 formed on its inner armwhile to its outer i 7 7 arm the lower end of the picker-staff h ispivoted. The upper end of the staff traverses a slot in the race-beamand is maintained in a proper horizontal plane while moving towardandfrom the cloth by a link, i as is usual. The object of the weight g isnot only to counterbalance the weight of the picker-stafi :and the armof the lever to which it is pivoted, but also to carry thepicker-stafl', or assist in carrying the picker-staff, back to the outerend of the shuttle-box during the latter part .of its movement after ithas thrown a shuttle.

The weight of the pieker-stafi' and of the leverarm to which it ispivoted, when not counterbalanced, absorbs to some extent the force ofthe picker-staff in throwing the shuttle after the picker-stad haspassed a vertical position, The picking-shaft oscillates in bearings kaffixed to the loom-frame, and has an arm, Z, depending from it, whichis connected by a strap, or, to the picker-staff.

When the picking-shaft is not in action it is held in one direction bythe arm I resting against the loom-frame, as shown in Fig. 14.,

v while it is free to turn in the opposite direction. An arm, it,extends horizontally, or

nearly so, from the picking-shaft, against which an arm, 0 on thecam-shaft e, strikes to throw the shuttle.

From the above description it will be seen that it the arm n was firmlyaffixed to the picking-shaft the movement of the loom could I not bereversed, as the arm 0, striking against the arm a, would arrest it.Toovercome this ditficulty thearm n is made capable of yield ing underthe action of acoiled spring, p, in the direction in which the arm 0moves when the movement of the loom is reversed, and is made rigid inthe opposite direction by its tended by'atmospheric or other causes. The

jacquard-machine may be constructed and the harness-cords arranged as isusual. The beams which support the mechanism on which it rests aremarked 8 (See Figs. 2, 3.) It is guided in its up and down movements byfour guide-stands, t, aflixed to the beams just ment10l1ed.- In thesestands suitable bearings are By limiting the movement of the frame.

formed, in which two shafts, a, turn, which part of the cam having thelargest diameter,

carry at each of their outer ends a cam, 12, on which the feet of themachine rest. To the rear ends of each of these shafts a screwgear, W,is affixed, and a horizontal shaft, wfl'supported by bearings 00,carries two screws, y, which, respectively, engage the screw-gears. Thecams '0 and the'screws and screw-gears which turn the shaft that carrythem, are right-and-left handed, in order that the tendency of theweight of the jacquard-machine to turn the shafts may be counteracted.When the shaft w is turned in one direction it will raise thejacquard-machine, and when it is turned in the opposite direction itwill depress it. Heretofore the operator has turned the shaft w forthese purposes by a hand- Wheel affixed to it, which, being considerableabove'his reach when standing on the floor of the mill, he is obliged toascend by steps or otherwise to a height at which he can reach it. Toobviate this inconvenience I combine with the mechanism just described adepending shaft, to the lower end'of which the handwheel is afiixed,said depending shaft being of sufficient length to bring the hand-wheelwithin easy reach of theeoperator when standing on the floor. Thehand-wheel is marked 2 and the depending shafta which shaft is supportedby the stand 00 affixed to the beam s and another stand, 1, affixed tothe loom- The upper end of the shaft carries a bevel-gear, 0 whichengages a bevel-gear, d affixed to the shaft w, and thus transmits themotion of the shaft a to the shaft to.

The trap-board of the jacquard-machine is marked 6 and is connected bybars f with lever-arms g extending from a shaft, h, which oscillates inbearings 75 supported by the frame of the machine. The trap-board iselevated and depressed by oscillating the shaft h as is usual. The meanswhich Iemploy to oscillate it, and to whichthis part of my inventionrelates, may be described as follows: A cam, j carried by the shaft g,before mentioned, acts on a cam-roller, k which is pivoted to the lowerend of an upright lever, 1 which oscillates on a fixed axis, a and atits upper end is connected with the depending arm of an elbow-lever, W,by a horizontal rod, 12?. The elb0wlever m oscillates on an axis, 0while a bar, 19", connects its horizontal arm with a lever-arm,qextending from and affixed to the shaft h", the ends of the bar 19 beingattached to their respective arms by a ball-and-socket joint. It will beseen that by connecting the upright lever Z with the depending arm ofthe elbow-lever m on a horizontal or nearly horizontal plane, thejacquardmachine may be elevated and depressed, as above explained,without the necessity of varying the length of the connecting-rod. Now,suppose the trap-board to be in its lowest position, and the cam-rollerresting on the part of the cam having the smallest diameter, it will beobviousthat, as the cam moves forward and carries the cam-roller out tothe itwill raise the trap-board to its highest position, as it isrepresented in the drawings, then, as the cam continues its movement,and the cam-roller is returning to its supposed first position, thetrap-board will descend by its own gravity.

The card-cylinder r receives its reciprocating movement from anoscillating shaft, 8 and is drawn against the ends of the needles by aweight, it, on a lever-arm, a, as is usual. A bar, 21 connects thelever-arm a with another lever-arm, $0 which oscillates on a stud, :0supported by the frame of the jacquardmachine. The lever-arm @11 carriesa roller, 3 which rests on the horizontal arm of an elbow-lever, 2 asrepresented in Fig. 16. The depending arm of the elbow-lever 2 isconnected by a horizontal red, a to the upper arm of an upright lever, bwhich oscillates on the axis a", before mentioned, and carries acam-roller, 0 at its lower end, on which a earn, 01 acts. The cam draises the weight 2?, and draws the card-cylinder away from the needlesin a manner similar to that in which the cam j raises the trap-board, asbefore explained.

I will now describe the mode of operating the comber-board. The objectof this part of my invention is to diminish the motive power required todrive the loom; to prevent the weight of that portion of the jacquard-harness which is raised by the comber-board from pushingthe'loom forward when it descends, whereby the loom in that stage of itsoperation may be more easily stopped; and also to form a more even shed.Fig. 17 is a sectional view of this part of the mechanism, lookingtoward the right-hand end of the loom. The (somber-board, as is wellknown, is employed to raise the weight suspended from the harness-cordsof the jacquard-machine. It is marked 6 in the drawings, and isrepresented in its elevated position.

The harness-cords pass from the jacquard machine down through theCOIDbGP-bOELld,

and have weights suspended from them, and

knots formed on them by which they are liftedby the comber-board, as isusual; and as the mounting of the jacquard harness cords is well knownit is deemed unnecessary to represent them in the drawings. When thecomber-board descends to its lowest position, the harness-cords are leftsuspended from the jacquard-machine, and made tense by their respectiveweights, then as the weights are raised by the. (somber-board actingontheir knots their upper portion is slackened and hangs loosely. In orderthat the trap-board may properly trap the cords, it is necessary thatthey should be tense at the time the trapping operation takes place;consequently atthat time the comber-board is made to descend below theknots on which it acts, thus leaving the cords and weights suspendedfrom the jacquard-machine.

It will thus be seen that the Weight of the harness is-alternatelyshifted from the jacquard-machine to the comber-board. and vice versa,according as the comber-board is elevated or depressed. If, under theseconditions, a counter-balance weight, acting in the direction of themotive power, is applied to the comber-board to counterbalance theweight of the harness, a shock to the mechanism will be produced whenthe weightof the barness is shifted from the comber-board to thejacquardmachine, by the sudden change in.

the direction in which the counter-balance weight will press on the camwhich actuates it. Instead, therefore, of applying the counter-balanceweight so as to act in the direction of the motive power, I apply it soas to act in the oppositedirection, wherebyit presses on the camconstantly in one direction, its size being sufficient to raise thecomber-board and the harness-Weights connected with it. A shaft, 2'extends across the loom, and oscillates in bearings j affixed to theloom-frame. From its rear side two lever-arms, k extend and carry thecounter-balance weight 1 For convenience, I sometimes place this weightbelow the floor of the mill, and support it by chains affixed to theupper ends of the segments h of the lever-arms. One of these leverarmsis connected by an adjustable rod, m, to a lever-arm, a, whichoscillates on a stud, 0 .affixed to the loom-frame, and carries a cam--roller, 10. on which a cam, g, on the shaft 6 acts, to raise anddepress the weight. From the front side of the shaft 0' two lever-arms,1, also. extend, to the ends of which the lower ends of bars 8 arerespectively jointed, while the upper ends of said bars aresimilarlyjointed to stands i which are affixed to the under side of thecomber-board. These stand s carry rollers a", which traverse suitablegrooves in guide-stand c and thus guide the comberboard in its verticalmovements.

It will be obvious from this description that when the counter-balanceweight descends the comber-board will .be elevated, and when thecounter-balance weight is elevated the comber board will descend; thatthe pressure of the counter-balance weight on the cam will always beinone direction; and that by counterbal- .ancing the weight of the harnessless power will be required to drive the loom than when itisnotcounterbalanced. It will be obvious also that, as the gravitatingforce of the counter-balance weight is somewhat greater than that of theharness-weights, the tendency of this arrangement will be to retard theloom rather than to accelerate it when theharness- I is elevated-thatis, raise its rear edge higher than its front edge is raised, thusbringing the eyes of the jacquard-harness, respectively, to a linecorresponding to. the angle of the :shed. This is effected asfollows:

Afiixed to the stands t before mentioned, are depending arms 20 whichcarry rollers m which ply in grooves y formed in guide-stands e affixedobliquely to the loom-frame. -When the coinber-board is elevated therollers 00 will tip it in accordance with the angle given to theguide-stands, andwhen it is depressed they will return it to its formerposition.

The mode of operating the heddle-frames may be described as follows: Theobject of i this part of my invention is to impart a more positiveandsteady movement. to the heddleframes than is imparted by the usualstrapconnections. A sectional elevation of the heddle-frames, and themechanism which operates them, is given in Fig. 21, looking toward theright-hand end of the loom. The heddle-frames, to which the heddles maybe applied as is usual, are marked a", and though only two of them arerepresented a greater number of them may be used, and, as each frameisactuated by a separate mechanism, which is common to all the others,only one of them need be described. On the upper corners of the frameprojections I) are formed, which ply in grooves c in fixed stands (1",and guide the frame in its vertical movements. To the lower edge of theframe the upper ends of rods 6'' (there being two for each frame) arefirmly affixed, while their lower ends are jointed, respectively, tolever-armsf affixed to an oscillating shaft, 9", which is supported byfixed bearings k From the same shaft another lever-arm,j extends, in theend of which a slot, 1 is formed. On a fixed stud, of, a lever-arm, noscillates, and also has a slot, 0", formed in its end. A stud, p, isaffixed to each of said lever-arms in such manner as to be capable ofadjustment in their respective slots, the two studs being connected byan. adjustable rod, (1 which is provided witharight andleft handed nut,W. The lever-arm n carries a cam-roller, 8 on which a grooved cam, t,acts, and raises and depresses the heddle-frame.

It will thus be seen that as. all the connections between the cam andthe heddle-frame are of a rigid character, they will impart a The partof my invention which relates to the construction of the warp-beamconsists in making the warp-beam wholly of cast metal, either iron orsteel, (steel being preferred when lightness is an object,) and castingits barrel and its bearings hollow andin one piece, and screwing the.beam-heads against shouldersformed on the ,endsof the-barrel.

The warp-beam is marked a in'the drawings,

and is represented as applied to the loom in Figs. 2, 3, and 4. Itsseveral parts are represented in detached views, in which Fig. 18 is aview of the barrel and the bearings of the beam as cast in one piece,Fig. 19 a view of the beam-head, and Fig. 20 a longitudinal section ofthe beam, showing the hollow cavity in the barrel and in the bearings,and the modein which the heads are affixed to the barrel. The barrel ofthe beam is marked 3 and its bearings 2 both parts being cast in onepiece with an interior cavity, a, as seen in Fig. 20. The beam-heads aremarked b andthe shoulders on the barrel, to which they are affixed, 0respectively. The heads b are screwed to the shoulders 0 as is shown inthe may be more readily understood, I will remark that the warp passesfrom the warp-beam around a guide -rod, over the tension-bar, throughthe heddles, to a positive take-up roller, as is usual, and as isindicated in Fig. 3. The tension-bar also, under the force of a weight,gives the required tension to the warp and regulates its delivery, as isusual.

The tension-bar is marked d", and oscillates on axes 6 supported by theloom-frame. To

3 its right-hand axis a lever-arm, f, is affixed,

which terminates inv the form of a segment, having a smooth face, onwhich a brake-lever, 9", acts. The brake-lever oscillates on a fixedstud, it and is actuated by a toggle-joint arrangement, which consistsof a lever-arm,'i that oscillates on a fixed stud, j and a link, 70*,the upper end of which is jointed to the brake-lever, and the lower endto the leverarm. A connecting-bar, Z has its rear end also jointed tothe lever-arm, while its forward end is pivoted to the depending armlswhich operates the lay, as before described. Hence it will be seen thatwhen the depending arm puts the lay in its backward position, in whichit is represented in the drawings, it will push the brake-lever awayfrom the segment-lever, as shown in Fig, 22, and leave the tension-barfree; then, when it moves forward, and gives the lay itsgfirst beat, itbrings the centers of the toggle joint arrangement to a line, as shownin Fig. 23, and presses the brake-lever against the segment-lever, andholds the tension-bar rigid; then, as it continues its movement, towithdraw the lay preparatory to its second beat, it will draw thetoggle-joint arrangement forward to the position indicated by the dottedlines, and release the-brake, and when it returns and gives the lay itssecond heat, it will again bring the centers of the toggle-jointarrangement in'a line, and apply the brake as before. Thus, it will beseen that the brake will be brought into action, and released at eachbeat of the lay.

I do not intend to confine myself to the form and arrangement of thevarious parts of the mechanism above described, as it will be obvious tothose acquainted with the construction of looms that they may be variedwithout departing from the principles of my inventions.

What I claim as new, and desire to secure by Letters Patent, is asfollows, viz:

1. In combination with a reversing mechanism, consisting of the roller1), axis q, gears 1" and s, stud t, and lever-arm u, as herein represented and described, a treadle-lever, whereby the weaver may put thereversing mechanism in action, substantially as and for the purposespecified.

2. In combination with a brake-wheel on th driving-shaft of apower-loom, a brake and toggle-joint mechanism, such as is hereinrepresented and described, for arresting the movement of the loom, saidtoggle-joint mechanism being brought into action by the loom-shipper,and disconnected from it by means substantially as described, to set theloom free, substantially as herein set forth.

3. In combination with the reversing mechanism and the treadle-lever bywhich it is brought into action as aforesaid, a releasinglever, wherebythe brake for arresting the movement of the loom is disconnected .fromthe loom-shipper and withdrawn from the brake-wheel, substantially asspecified.

4. In combination with the brakeadapted to stop the loom, and the shaft9 of the wire-operating mechanism, the brake f as and for the purposespecified.

5. The combination of mechanism herein represented and described, foroperating the lay of the loom with a double-beat movement, consisting ofa single crank, (1 bar r depending arm 3 oscillating shaft 0 leverarms aand connecting-bars m, the said single crank 1 the bar T and thedepending arm 8 being located outside the loom-frame, as herein setforth.

6. The combination of mechanism, herein represented and described, forholding the swinging end of theshuttle-binder rigid when the shuttle iscompleting its movement into the shuttle-box, and liberating it beforethe shuttle is thrown, consisting of the axis 00 ad k which elevates anddepresses the trap-board of the jacquard-machine, the oscillatingmechanism herein described, consisting of the cam j, upright lever 1horizontal rod 1?, elbow leverm the bar 10 and the lever-arm 9. Incombination with the comber-board for elevating and depressing thejacquardharness, as herein described, a counter-balance weight, arrangedas described, whereby the comber-board is elevated, said weight beingwithdrawn or raised by the motive power which depresses thecomber-board, substantially as specified.

10. In combination with the comber-board, the mechanism whereby it isput in an oblique position to form an even shed, as herein specified,consisting of the depending arms w, rollers w and guide-stands z".

7 11. The combination of mechanism, herein described, for actuating theheddle-frames, consisting of the cam t", roller s",1ever-arm n",adjustable rod g lever-arm j", oscillating shaft g", connecting-rod e,and lever-arms f".

' 12. And, in combination with a tension-bar which gives tension to thewarp and regulates its delivery, a brake and toggle-joint mechanism forholding said tension-bar rigid while the lay beats up the weft, and alay having a double-beat movement, substantially as specified.

ERASTUS BRIGHAM BIGEL OW.

Witnesses:

J OHN T. WHITMAN, DANIEL MERRIMAN.

